在下列叙述中,正确的是A.软盘、硬盘和光盘都是外存储器 B.计算机的外存储器比内存储

题型:单项选择题

问题:

在下列叙述中,正确的是

A.软盘、硬盘和光盘都是外存储器

B.计算机的外存储器比内存储器速度快

C.计算机系统中的任何存储器在断电的情况下,所存的信息不会丢失

D.绘图仪、鼠标、显示器和光笔都是输入设备

考点:计算机等级考试PC技术三级PC技术笔试337
题型:单项选择题

阅读理解。

                                                     A ten-year-old Teacher

     How young can a teacher be? A teacher can be any age. Just ask Chrissie Mckenney. She was only

10 when she started teaching.

     How did Chrissie get the job? It was not easy. Chrissie wanted to help children who cannot hear.

But the school had never had such a young helper. Could Chrissie do it?

     First, Chrissie learned to sign. Signing is a way of talking with your hands. Soon it was easy for

Chrissie to talk to the children. So the school let her help. Now Chrissie visits the school almost every

day. The children love their young teacher. She is their friend.

1. Chrissie wanted to help children who can't _____.

A. hear

B. see

C. play

2. This story tells about a _____.

A. special class

B. young teacher

C. silly person

3. In the third part of the story, what does the word "learned" mean _____?

A. forget

B. found out how

C. stooped

4. The school let Chrissie help because she _____.

A. was too old

B. could sigh

C. could not hear

5. You can guess from the story that most teachers _____ Chrissie.

A. are older than

B. do not like

C. are just like

题型:单项选择题

5.3749是(    )位小数,它精确到百分位约是(    ),它保留三位小数约是(    )。

题型:单项选择题

下列有关“健康”的描述,正确的是()。

A.健康就是各器官功能正常

B.健康就是无躯体疾病或不适

C.健康就是个体能正确地评价自己

D.健康就是有完好的生理、心理和社会适应能力

E.健康与疾病是对立的,不能相互转化

题型:单项选择题

中性点不接地或非有效接地的三相三线高压线路,宜采用()计量。

A.三相三线电能表

B.三相四线电能表

C.三相三线,三相四线电能表均可

D.以上均不对

题型:单项选择题

枕前位胎头娩出后的第一个动作是()

A.衔接

B.仰伸

C.俯屈

D.复位

E.内旋转

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